rustsec-2025-0037
Vulnerability from osv_rustsec
Published
2025-05-22 12:00
Modified
2025-10-28 06:02
Summary
Pingora Request Smuggling and Cache Poisoning
Details

Pingora versions prior to 0.5.0 which used the caching functionality in pingora-proxy did not properly drain the downstream request body on cache hits.

This allows an attacker to craft malicious HTTP/1.1 requests which could lead to request smuggling or cache poisoning.

This flaw was corrected in commit fda3317ec822678564d641e7cf1c9b77ee3759ff by ensuring that the downstream request body is always drained before a connection can be reused.

See the blog post for more information.

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "pingora-core",
        "purl": "pkg:cargo/pingora-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.5.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2025-4366",
    "GHSA-93c7-7xqw-w357"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Pingora versions prior to 0.5.0 which used the caching functionality in pingora-proxy did not properly drain the downstream request body on cache hits.\n\nThis allows an attacker to craft malicious HTTP/1.1 requests which could lead to request smuggling or cache poisoning.\n\nThis flaw was corrected in commit fda3317ec822678564d641e7cf1c9b77ee3759ff by ensuring that the downstream request body is always drained before a connection can be reused.\n\nSee [the blog post](https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora/) for more information.",
  "id": "RUSTSEC-2025-0037",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2025-05-22T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/pingora-core"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0037.html"
    },
    {
      "type": "WEB",
      "url": "https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora/"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Pingora Request Smuggling and Cache Poisoning"
}


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